GraphicsMagick 1.3.26 has a heap overflow in the WriteCMYKImage() function in coders/cmyk.c when processing multiple frames that have non-identical widths.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://hg.code.sf.net/p/graphicsmagick/code/rev/d00b74315a71 | third party advisory |
| https://www.debian.org/security/2018/dsa-4321 | vendor advisory |
| https://lists.debian.org/debian-lts-announce/2018/06/msg00009.html | mailing list |
| http://www.securityfocus.com/bid/100357 | vdb entry |
| https://usn.ubuntu.com/4222-1/ | vendor advisory |